Shoe-filler composition.



J. P; KEENER.

SHOE FILLER OOMPGSITION. 7

APPLICATION FILED 13130.27, 1909.

Patented Mar. 12, 1912.

UNITED STATES PATENT OFFICE.

JAMES P. KEENER, OF BROCK'ION, MASSACHUSETTS.

SHOE-FILLER COMPOSITION.

To all whom it may concern:

Be it known that I. JAMES P. Knnxsa, a c1tizen of the United States.residing at- Brockton. in the county of Plymouth and v State ofMassachusetts, have invented a new and useful Improvement in shoe-FillerComposition, of which the following is a specification, reference beinghad therein to the accompanying drawings.

This invention relates to a composition for shoes in filling the spacebetween the insole and the outer sole of a shoe.

In the manufacture of welted shoes a space is produced between theinsole and the outer sole and this space is commonly filled with aplastic composition adapted to set and harden after its insertionsufficiently to prevent it from flowing between the soles.

The object of the present invention is to produce a composition suitablefor use as a shoe filler, which shall be flexible, waterproof, durable,odorless and inexpensive, and which may be conveniently handled inapplying it to shoes.

To the above ends my invention consists in the composition hereinafterdescribed as defined in the succeeding claims.

The accompanying drawing is a cross-section of a shoe illustrating themanner in which the filler is embodied therein.

My improved filler comprises a binder and 21 base. For the binder Iemploy, in the preferred embodiment of the invention. a compositionconsisting of rosin oil, rosin dextrin and resin derived from a gum.Various resins of this character may be employed but I have found thatthe best results are secured by using what is known to the trade asopaque, namely, resin extracted from pontianac gum and reduced topowdered form. T he. ingredients are prefen ably used in substantiallythe following proportions: Rosin 3 parts; opaque or other resin derivedfrom a gum 2 parts; rosin oil 2 parts; dextrin 2 parts.

The ingredientsof the binder are heated sufficiently to melt the rosinand opaque or other resin and are then thoroughly mixed.

As a base one may employ any inexpen sive solid granular or pulverulentmaterial such as saw-dust. ground leather scraps. cork or asbestos fibersince the function of this ingredient of the filler is merelymechanical, to give the requisite bulk and solidity. The binder is mixedwith the bod;

Specification of Letters Patent.

Application filed December 27, 1909. Serial No.

l 1 x l v Patented Mar. 12, 1912.

when hot, the amount of binder used depending upon the nature of thebody and being suiticient to bind the particles of the body firmlytogether and make a substantially solid and impervious composition. Thefiller may be molded when hot into masses of convenient form and size,which maintain their form and may be conveniently handled when cold, thefiller being normally non-sticky.

If desired the filler may be ground or crushed when cold into agranulated form and marketed in convenient packages.

hen the filler is to be used it is heated, preferably in a.steam-jacketed receptacle, to a temperature suflicient to soften thebinder. A temperature of about 212 degrees, or that of boiling water issutiicient for this purpose. hen so heated the filler acquires a pastyconsistency and may then be conveniently applied to the shoe. For thispurpose a knife or flat spreader is used.

In the drawing the shoe is represented as having an insole 1 and anouter sole 2 between which is a body 3 of the filler of substantiallyuniform thickness extending from the inseam atone side of the shoe tothe inseam at the other side.

The filler heretofore described is firm butelastic when cold and is alsowaterproof in ahigh degree. The opaque or other resin derived from a gumgives the filler the valuable characteristic of remaining flexible evenat a very low temperature, so that the filler does not crack anddisintegrate when the shoe is used in winter. The rosin imparts thenecessary firmness to the filler and also constitutes, an inexpensiveingredient therefor. The rosin oil increases the fluidity of the fillerso as to permit its being applied to the shoe ata comparatively lowtemperature. Other and similar oils may be used in place of rosin oilbut the latter is preferable and I have found that it gives the best results in that it will not permeate the leather sole of the shoe in thecourse of wear. The dextrin has the effect of preventing the filler fromclinging to the knife or spreader when it is applied, which renders itunnecessary to heat the spreader. The dextrin may be omitted from thecomposition, however, as it is not essential, but in this case thespreader must be heated substantially to the same temperature as thefiller before and during its use in applying the filler, and the fillermust also be worked at a somewhat higher temperature than when dextrinis used.

While the proportionate amounts of the various ingredients which I havedescribed have been found to be satisfactory in practical use of thefiller, the composition may be varied in this respect without departurefrom the nature of the invention. As described, however, the compositionhas, in addition to the advantages already described, the advantage ofbeing inexpensive, easy to work, odorless and uninflammable.

What I claim is 1. A composition for filling shoes comprising a base ofcomminuted solid material and a binder comprising rosin, resin derivedfrom a gum and oil. i

2. A composition for filling shoes comprising a base of comminutedmaterial and a binder comprising rosin, resin derived from a gum, oiland dextrin.

3. A composition for filling shoes comprising a base of comminuted solidmaterial and a binder consisting of resin, resin derived from a gum,rosin oil and dextrin.

4. A composition for filling shoes, comprising a base of comminutedsolid material and a binder consisting of rosin, 30%, resin derived froma gum 30%, rosin oil 20% and dextrin 20.

5. A composition for filling shoes, comprising a base of comminutedsolid material and a binder consisting of three parts of rosin, threeparts of resin derived from a JAMES 1. KE-ENER.

Witnesses:

CHARLES F. RJCIIARDSO'N, F. F. UNIAR.

